Road grader and ditcher



Oct. 9, 1934. s. BURNSTAD 1,975,767

ROAD GRADER AND DITCHER Filed Dec. 7, 1931` 2 sheets-shewb y1 Way. f,IFOP/YE? Get, 9, 1934. s. H. BURNSTAD ROAD GRADER AND DITCHER Filed Dec.7, 1951 2 Sheets-Sheet 2 Patented Oct. 9, 1934 ROAD GRADER AND DITCHERSigurd Hans Burnstad, Ohaton, Alberta, Canada, assigner to BurnstadGrading Machine Company, Limited, Edmonton, Alberta, Canada, a

corporation Application December 7, 1931, Serial No. 579,642

1 Claim.

The invention relates to a road grader and ditcher, as described in thepresent specification and illustrated in the accompanying drawings pthat form part of the same.

The invention consists essentially in the guiding, cutting, plowing andconveying mechanisms and their relative functions in breaking and makingthe road, as pointed out in the claim for novelty following adescription in detail of the preferred arrangement and construction ofthe parts comprising the machine.

The objects of the invention are to construct machines operable underall conditions of the soil and equally suitable for urban, suburban andl country road making and at the same time reduce the cost of gradingand eliminate much of the labor manually required for manual work; toadjust the mechanisms in order to meet conditions of the country throughwhich the road is located and avoid the delays incidental to repairs andreplacements often found necessary where these adjustments are absentand the parts less sturdy, thus minimizing the losses of the contractorsand governments, and insuring the successful and economical carrying outof the work in accordance with theoriginal estimates in so far as thegrading is concerned; to utilize the principles of constructionoriginally included in the showing and description of a grader in PatentNo. 1,755,467 dated April 22, 1930,'and afterwards in a Patent No.1,795,360, patented March 10, 1931 and Patent No. 1,888,327 patentedNovember 22, 1932, for improvements and to bring these early conceptionsinto more practical shape and present to the engineering world areliable and eicient machine thoroughly tested and the result of themany experiments that have led up to its being; and generally to'provide to governments and others grading mechanismthat will facilitatethe construction of roads for highways or for urban, suburban or otherccimnunities at the lowest cost consistent with good work.

In the drawings, Figure 1 is a plan View of the machine.r

Figure 2 is a side elevational view of the machine on the plow side.

Figure 3 is a side elevational view of the machine on the third wheelside.

Figure 4 is a side elevational and contiguous parts.

Figure 5 is a front elevational view of the plow and mechanism. l

Figure 6 is a rear elevational view of the plow and mechanism.

Figure 7 is a detail of the conveyer support detail oi the plow showingthe conveyer broken away and the contiguous parts at the delivery end ofthe plow mechanism.

Like numerals of reference indicate corresponding parts in the variousfigures.

Referring to the drawings, the main feature of the Vehicle frame is theI-beam indicated by the numeral 15, and it is from this beam that thevarious bars extend, the bars 16 and 17 bcing connected and rigidlysecured to said main beam and converging to the bearing structure 18.

A central brace 19 extends also from the main beam to the bearingstructure and is rigidly secured.

The bracket 20 forms the means of rigidly securing the bar 16 to saidmain beam, this bracket being in the form of an I-beam having the plate21 at the inner end.

The beam 22 extends from the main beam 15 and is rigidly secured theretoand terminates also at the bearing structure 18, to which it is rigidlysecured.

The fender rail 23 is supported by the bar 24 from the bar 16 and thebar 25 from the main beam 15, and carries the hitching yoke 26, and thisfender rail forms a support at one end for the bar extension 27 from thefork 28 secured to the bearing structure 18 and embracing the thirdwheel 29, this third wheel having a vertical adjustment operated by thewheel 30.

The outer end 31 of said bar extension extends through the outer end ofthe tender rail and is cushioned therein by the spring 32.

The bar 17V is elevated in respect to the main beam 15 and is connectedto said main beam 15 by the upwardly inclined projecting beam 33 at therear ofthe machine and this beam 17 provides a rest for the booms 34 and`35, which extend from the swivel mechanism 36 supported by said mainbeam. y

Y This swivel mechanism l36 allows the swinging of the booms on thesupporting bar 17 and the chain ends 37 drop from the'booms to whichthey are attached and terminate in hooks 38 by means of which they areconnected to the conveyer 39.

This conveyer 39 is formed of an endless belt 40 operating on the frame41. This frame 41 has the chain ends 42 attached thereto and to thechain ends the hooks 38 are secured, being adjustable from link to linkaccording to the particular incline desired for the conveyer 39, whichis further determined by the inner slung end.

This inner slung end of the conveyer has the bar 43 with the eye 44 bymeans of which it is held to the adjustable bracket 45. This bracketcarries a pin 46 on which the bar 43 is mounted through the eye 44.

The bracket 45 is in angle shape, one section of which is threaded asshown at 47 and this threaded end is mounted in the sleeve 48 andadjusted vertically Aby the winged nut 49.

The sleeve 48 is rigidly secured'to a strap bracket 50 which is securedaround the plow beam 5l. This plow beam 51 is mounted in the hanger 52and the hanger itself is suspended on the I- beam 15 through theoscillating .bar 53 pivotally secured to the rigid cross bar 54, thusallowing for the hanger 52 a reasonable self adjusting movement in thelifting and lowering of the plow beam 51.

The strap bracket 50 is formed with an extension 55 riveted to the strap`members and having a foot 56 secured to the plate 57 which approximatesthe landside in plow mechanism.

The hanger 52` is rigidly secured to this plate 57 and the foot 56, thethree being riveted together while the colter 58 is also secured to thisplate 57 and in turn the plow share 59 is secured to the colter'and alsothe mold board 60, these two, the plow share and the colter arereinforced by the angle plates 6l at the back.

The plow share 59 is an elongated plate of rectangular form andconstitutes a path to the mold board, whichdirects the dirt on to theconveyer 39 and it has been explained that the conveyer is adjustable inrelation to the mold board for the different classifications of dirt.

This plow share is bent cornerwise forming the triangularly shapedsection 62 for the cutting edge and spade end 63 and for guiding thedirt up the share vwhich leans backwardly'in substantially the sameincline as the mold board, both share and mold board'being inwardlycurved at their inner ends 64 and 65.

The plow beam 5l is supported at the front end by the cable 66 attachedto the ring 67 and runs on the pulleys 68 and 69 to the reel or drum 70rotated by the spoke wheel 71.

This drops the point of the plow in position Vforv digging purposes.

Y The rear end of the plow beam supported by the cable 72, is trainedover the pulleys 73 to effect the raising and lowering of the wheel 74,and by means of this cable 7 2, attached to the eye 75 from the beam,the said beam maybe raised and through the raising of the beam, the plowmay be raised clear of the ground during the period when the machine isidle.

The sling rope or cable 76 is secured to the conveyer at either side andis'trained over the pulleys 77 and 78 respectively secured to the frameof the machine and is engaged by the grooved roller 79 which isvsecuredto the chain 80 hookedto the beam 22 thereby making the slackgoverning Vroller 79 adjustable in lits relation to the cable 76, whichmeans that the conveyer is so slung as to adjust itself nicely to theunevenness of the ground and the consequent more or less erratickmovements of the plow mechanism in its operation in receiving anddelivering the dirt to the conveyer. f Y

The numeral 81 shows a motor mounted adjacent to the front of the'frarneand'operatively connected to any part requiring its services, such `asthe flexible shaft connection 82 with the third tail herein, and theiiexible shaft connection 83, with the conveyer mechanism, which is notdescribed in detail herein.

The other wheels 84 and 85 of the running gear have novel featuresconnected to them, but these form separate inventions and therefore arenot described herein. l v

The oscillating bar 53, which is pivotallymounted, as explained, isbraced from or braces the hanger 52 by means of the turnbuckle 86 and itwill be noticed that the hanger will carry the plow beam up andit willalso carry the oscillating bar up, though meanwhile, it is held in asuspended positionby the cables at the ends.

, The details of the conveyer have not been set forth herein thoughthere are patentable features in connection with it, however, it iscontended that-the course of the dirt includes several features whichare of novel formation, not so much as to the 'actual structuralformation as to the principle of operation, though there are certainshapes and forms that contribute to the successf ful results in themachine and these are spev ciflcally novel.

In the operation of the machine, the usual thing is to employ a tractor,which is attached to the hitching yoke, very often by a long chain, sothat the tractor can travel in a `different path from the diggingmachine.

The plow share is dropped by means of lowering the forward end of theplow beam. This forward end digs into the ground and directs the dirtremoved on to the plow blade or in other words, the plate of the plowshare, and this plate, having an upward rearward inclination, the dirtcontinues on to the mold board and from the mold board on to theconveyer to which it has been previously adjusted in respect todistance, because in some classes of dirt, it is desirable to have theconveyer go above the mold board and in others it is desirable to haveit go below, and again, in the ordinary dirt, it may be on a levelwith'it, so this adjustment is quite important and facilitates thecontinuous operation.

The dirt is moved by the conveyer to the desired place on the roadway orto a truck. In any case, this delivery is really behind the machine andit is necessary frequently to spread the dirt by means of thisrconveyer, consequently, this spreading must be clear of the machine andit is especially desirable to build up part of the roadway in thisparticular manner.

The adjustability of the conveyer is thus quite a feature of the machineand this styleof con- Veyer in its relation to the frame of the machineis part of previously patented constructions, though the course of thedirt is somewhat diierent in this invention and that concerns thoseparts of the invention for which protection is asked.

In a road grader and ditcher, a frame having a main beam and laterallyextending beams to a third wheel structure and including an elevatedbeam forming a support, a pair of booms from a common swivel pointresting on said main beam and adjustable on said elevated beam,V a plowshare and parts forming apath for the removed dirt and a conveyer slungto an adjusted position in relation to said parts and extended rear.-wardlyoffside from the straight lineof direction.

SIGURD HANS BURNSTAD.

IIB

